3a66b5fd01
This method is deprecated since Meson 0.56.0: <https://mesonbuild.com/Release-notes-for-0-56-0.html#mesonbuild_root-and-mesonsource_root-are-deprecated> We could replace it with meson.project_source_root(), but this would make Meson 0.56 or above mandatory. Since the path in always computed from the server/ directory, just add '..' to reference the root project directory. Refs c456e3826470753bdaefcffc93e9ae1bf25b12f7